National Union of Metalworkers of South Africa

The National Union of Metalworkers of South Africa (NUMSA) is the largest labor union of South Africa, with 338,000 members. Led by General Secretary Irvin Jim (who described NUMSA as a Marxist-Leninist group devoted to the creation of a "Socialist Republic of South Africa"), the union was expelled from the Congress of South African Trade Unions (COSATU) on 8 November 2014, and NUMSA fought for its readmission to COSATU, which was turning into a bureaucratic union.